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【单选题】
假设在Shell脚本编程中，要在用户主目录下创建一个以当前内核版本为目录名的目录，以下命令中，不能正确实现的是（ ）。A.
mkdir $HOME/’uname –r’
B.
mkdir ~/’uname –r’
C.
.mkdir $home/’uname –r’
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皮皮学刷刷变学霸
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【单选题】以R134a代替过去常用的氟利昂作制冷剂,下列说法不对的是 。
A.
必须改用适于它的脂类润滑油
B.
不能用卤素检
C.
不能用硅胶做干燥剂
D.
排气温度调需采用水冷
【单选题】以R134a代替过去常用的氟利昂作制冷剂，下列说法不对的是（）。
A.
必须改用适于它的脂类润滑油
B.
不能用卤素检漏灯
C.
不能用硅胶做干燥剂
D.
排气温度高需要采用水冷
【单选题】He saluted as they passed. He saluted ____.
A.
while they had passed
B.
while they were passing
C.
though they were passing
D.
because they had passed
【单选题】以R134a代替过去常用的氟利昂作制冷剂，下列说法不对的是
A.
必须改用适于它的脂类润滑油
B.
不能用卤素捡漏灯
C.
不能用硅胶做干燥剂
D.
排气温度高需采用水冷
【单选题】He passed ______ hours in the library he acquired information relative to the subject he was going to expound.
A.
resulting
B.
resultative
C.
resultful
D.
resulted
【单选题】He passed ______ hours in the library he acquired information relative to the subject he was going to expound.
A.
resulting
B.
resultative
C.
resultful
D.
resulting
【简答题】• USD4500 Beijing, 10th March • I beg you to pay to Bank of China , Beijing
or order providing the goods they supply are complied with contract the sum of
Five Thousand United Sta...
【简答题】One day, a poor boy, named Howard Kelly, was trying to pay his way through school by selling goods door to door. He was hungry, 1 he decided to beg something to eat. When a young woman opened the door...
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